Aside from the fact that it's been tried and has largely failed (see: Principality of Sealand), it isn't a workable idea for a number of technical reasons: - a

Aside from the fact that it's been tried and has largely failed (see: Principality of Sealand), it isn't a workable idea for a number of technical reasons: - an old, cheap rig may be nearing the end of (or has surpassed) its fatigue lifetime. Corrosion, subsiding into the soil, etc. are all factors too. It might be outright unsafe to occupy. - expanding one platform into others or into an artificial island is a monumentally expensive and challenging task; it's not going to happen for some fantastical micronation project.